/*
 * section and descriptor parser
 *
 * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org)
 * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net)
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
 */

#ifndef _UCSI_DVB_RNT_RAR_OVER_DVB_STREAM_DESCRIPTOR
#define _UCSI_DVB_RNT_RAR_OVER_DVB_STREAM_DESCRIPTOR 1

#ifdef __cplusplus
extern "C"
{
#endif

#include <libucsi/descriptor.h>
#include <libucsi/endianops.h>

/**
 * dvb_rnt_rar_over_dvb_stream_descriptor structure.
 */
struct dvb_rnt_rar_over_dvb_stream_descriptor {
	struct descriptor d;

	dvbdate_t first_valid_date;
	dvbdate_t last_valid_date;
  EBIT3(uint8_t weighting		: 6; ,
	uint8_t complete_flag		: 1; ,
	uint8_t scheduled_flag		: 1; );
	uint16_t transport_stream_id;
	uint16_t original_network_id;
	uint16_t service_id;
	uint8_t component_tag;
	/* struct dvb_rnt_rar_over_dvb_stream_descriptor_scheduled_info scheduled_info */
} __ucsi_packed;

/**
 * The scheduled_info field of a dvb_rnt_rar_over_dvb_stream_descriptor (only appears
 * if scheduled_flag = 1).
 */
struct dvb_rnt_rar_over_dvb_stream_descriptor_scheduled_info {
	dvbdate_t download_start_time;
	uint8_t download_period_duration;
	uint8_t download_cycle_time;
} __ucsi_packed;

/**
 * Process a dvb_rnt_rar_over_dvb_stream_descriptor.
 *
 * @param d Generic descriptor pointer.
 * @return dvb_rnt_rar_over_dvb_stream_descriptor pointer, or NULL on error.
 */
static inline struct dvb_rnt_rar_over_dvb_stream_descriptor*
	dvb_rnt_rar_over_dvb_stream_descriptor_codec(struct descriptor* d)
{
	uint8_t *buf = (uint8_t*) d;
	uint32_t len = d->len + 2;
	struct dvb_rnt_rar_over_dvb_stream_descriptor *ret =
		(struct dvb_rnt_rar_over_dvb_stream_descriptor *) buf;

	if (len < sizeof(struct dvb_rnt_rar_over_dvb_stream_descriptor))
		return NULL;

	ubswap16(buf + 13);
	ubswap16(buf + 15);
	ubswap16(buf + 17);

	if (ret->scheduled_flag == 1) {
		if (len < (sizeof(struct dvb_rnt_rar_over_dvb_stream_descriptor)+
			   sizeof(struct dvb_rnt_rar_over_dvb_stream_descriptor_scheduled_info)))
			return NULL;
	}

	return ret;
}

/**
 * Accessor for the scheduled_info field of a dvb_rnt_rar_over_dvb_stream_descriptor.
 *
 * @param d dvb_rnt_rar_over_dvb_stream_descriptor pointer.
 * @return Pointer, or NULL on error.
 */
static inline struct dvb_rnt_rar_over_dvb_stream_descriptor_scheduled_info*
	dvb_rnt_rar_over_dvb_stream_descriptor_scheduled_info(struct dvb_rnt_rar_over_dvb_stream_descriptor *d)
{
	if (d->scheduled_flag != 1)
		return NULL;
	return (struct dvb_rnt_rar_over_dvb_stream_descriptor_scheduled_info*)
			((uint8_t*) d + sizeof(struct dvb_rnt_rar_over_dvb_stream_descriptor));
}

#ifdef __cplusplus
}
#endif

#endif
